mapped_host_resolver.cc revision 3551c9c881056c480085172ff9840cab31610854 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "net/dns/mapped_host_resolver.h"
6
7#include "base/strings/string_util.h"
8#include "net/base/host_port_pair.h"
9#include "net/base/net_errors.h"
10#include "net/base/net_util.h"
11
12namespace net {
13
14MappedHostResolver::MappedHostResolver(scoped_ptr<HostResolver> impl)
15    : impl_(impl.Pass()) {
16}
17
18MappedHostResolver::~MappedHostResolver() {
19}
20
21int MappedHostResolver::Resolve(const RequestInfo& original_info,
22                                RequestPriority priority,
23                                AddressList* addresses,
24                                const CompletionCallback& callback,
25                                RequestHandle* out_req,
26                                const BoundNetLog& net_log) {
27  RequestInfo info = original_info;
28  int rv = ApplyRules(&info);
29  if (rv != OK)
30    return rv;
31
32  return impl_->Resolve(info, priority, addresses, callback, out_req, net_log);
33}
34
35int MappedHostResolver::ResolveFromCache(const RequestInfo& original_info,
36                                         AddressList* addresses,
37                                         const BoundNetLog& net_log) {
38  RequestInfo info = original_info;
39  int rv = ApplyRules(&info);
40  if (rv != OK)
41    return rv;
42
43  return impl_->ResolveFromCache(info, addresses, net_log);
44}
45
46void MappedHostResolver::CancelRequest(RequestHandle req) {
47  impl_->CancelRequest(req);
48}
49
50HostCache* MappedHostResolver::GetHostCache() {
51  return impl_->GetHostCache();
52}
53
54int MappedHostResolver::ApplyRules(RequestInfo* info) const {
55  HostPortPair host_port(info->host_port_pair());
56  if (rules_.RewriteHost(&host_port)) {
57    if (host_port.host() == "~NOTFOUND")
58      return ERR_NAME_NOT_RESOLVED;
59    info->set_host_port_pair(host_port);
60  }
61  return OK;
62}
63
64}  // namespace net
65